protected function parseFieldGroupConfig($id, $config)
{
$FGCNode = $this->XPath->evaluate('//FieldGroupConfig[@id="' . $id . '"]')->item(0);
if ($FGCNode === null) {
throw new InvalidFieldGroupConfigException('Invalid field group config structure.');
}
$FG = new FieldGroup($FGCNode, $this->XPath, $this->lang, $this->rootConfigID === $id, $this->attributes, $this->coefficients);
$FG->parse();
$config = array_merge_recursive($config, $FG->toArray());
if ($FG->hasChildGroups() === true) {
foreach ($FG->getChildGroups() as $chg) {
$config = $this->parseFieldGroupConfig($chg, $config);
}
}
return $config;
}